The Export Topcon TIN File command writes a Topcon TIN file
(.TN3) from a Carlson triangulation file (.TIN, .FLT). The routine
first prompts for the Carlson file and then the Topcon
file.
The Import Topcon TIN File command creates a Carlson Tin file
(.TIN, .FLT) from a Topcon triangulation file (.TN3). The routine
first prompts for the Topcon file and then the Carlson
file.
The units (Feet or Meters) for the triangulation file are the current units set in Drawing Setup.